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G; L. PLUMLEY, CALCULATING MACHINE. APPLICATION FILED Aums. 191a.

Patented Dec. 2, 1919.

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$4, is m G. L. PLUMLEY.

CALCULATING MACHINE.

APPLICATION FILED AUG.29. 191a.

Patented Dec. 2,1919.

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snow/bow Gardner L. Plumley,

saw, his 5 UNITED sTA rEs PATENT OFFICE.

GARDNER L; PLUMLEY, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO GEORGE H. PAYSON, E ENGLEWOOD, NEW JERSEY.

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application filed August 29, 1918. Serial N 0. 251,892.

To all whom it may concern.-

Be it known that I, GARDNER L. PLUMLEY, a citizen of the United States, and residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Calculat 'ing-Machines, of which the following is a specification, such as will enable those skilled inthe art to which it appertains to make and use the same.

This lnventlon relates to calculating machines and particularly to machines of this operation, and eflicient in use, and which may be manufactured at a minimum of cost, and with this and other obgects in view as hereinafter set out, the invention consists in a machine of the class specified, constructed and operating as hereinafter described and claimed.

The invention is fully-disclosed in the following specification, ofwhich the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a'plan view of my improved machine showing the parts thereof in their normal position and ready for use;

Fig. 2 a view similar to Fig. 1 and indicating the method of using the machine and showing parts of the construction in a different position; 1

Fig. 3 a section on the line 3-3 of Fig. 1;

Fig. 4 a partial section on the line H of Fig. 2; V

Fig. 5 a partial section on the line 5-5 of 2 and on an enlarged-scale; and,

Fig. 6 a view similar to Fig. 5 and showing parts in a different position.

In the practice of my invention, I provide a suitable base or support 10, which is approximately rectangular in form and the back of which is provided, with a raised hereinafter described.

guide flange 11 for guiding a slide or carriage member 12. The carriage member 12 is also guided at its front side by guide blocks 13 and 14 located at the opposite side of the base 10, as shown in Figs. 1 and 2.

The carriage member 12 consists of an elongated body portion 15 at the opposite ends of which are forwardly and backwardly directed extensions 16 and 17 respectively, and the central portion of the body 15 is provided adjacent to its opposite ends with apertures 18 through which is passed a headed pin 19, which also passes through corresponding apertures in the base 10, and this construction serves to lock the carriage member 12 against movement on the base 10 in its different positions, as clearly illustrated in Figs. 1 and 2.

Mounted in the base 10, approximately centrally thereof and forwardly of the carriage member 12, are two vertical shafts 20 and 21 which project above the top face of the base 10, and rotatably mounted on said shafts are circular disks 22 and 23 respectively to the bottom face of each of which are secured gear members 2 1 and 25.

Mounted in the base 10 forwardly and centrally of the disks 22 and 23 is another vertical shaft 26, on the upper end of which is rotatably mounted a crank 27 having a crankarm 28 and a thumb and finger piece 29, and secured to the bottom face of the crank 27 is a gear member 30, which is adapted to cooperate with the gear members 24 and 25 to rotate the disks 22 and 23, as

An upwardly directed pin 31 is secured to the base and serves to indicate the position at which the crank 27 is to be stopped in the operation of the machine.

The top faces of each of the disks 22 and 23 are provided with a plurality of deep radial recesses 32 in the inner ends of which are secured spring arms 33, as shown at 34. The arms 33 are provided with raised central portions 35 and the free ends of said arms are also provided with raised pins 36. Mounted on the top of each of said disks 22 and 23 are arc-shaped shutter plates 37 which are rotatably mounted on the upper end of the shafts 20 and 21, and are held in place by milled nuts 38, and these shutter plates are provided on the straight sides thereof and adjacent to the opposite ends of said sides with raised thumb and finger pieces 39 and with upwardly curved portions 40. The curved portions 40 are adapted to cooperate with the raised portions 35 on the arms 33 to permit theshutter plates 37 to pass thereover and depress said arms and upwardly directed pins 36 into the recessed portions 32 as indicated in Fig. 6.

Rotatably mounted on the top portion of the carriage member .12 are three gears or gear members 41, 42 and 43, which are spaced longitudinally of said carriage member, and as shown in Fig. 3 the gear members 41, 42 and 43 are all in a common plane and are slightly above the shutter plates 37 on the disks 22 and 23, but are in such position as to be operated by the'upwardly di rected pins 36 of said disks.

Rotatably mounted in the top face of the carriage member 12 rearwardly and at one side of, and in position to cooperate with V the gear members 41 and 42 are other gear members 44 and 45 respectively, and secured to the top of the gear member 44 is an arm 46 which is adapted to cooperate with a small gear 47 secured to the top face of the gear 42. Secured to the top of the gear 45 is an arm 48 which is higher than and adapted to pass over the gear 47, and to cotiperate with a small gear 49 secured to the top of the gear 43 through a reduced sleeve portion 50 as shown in Figs. 4 and 5.

Rotatably mounted on the top of the carriage member 12 at the left of the gear member 43 and in line with the sleeve portion 50 thereof is a gear member 51, which is placed in cooperative relation with the gears 43 and 49 through a radial projection 52 on the sleeve portion 50, as clearly shown in Figs. 1 to 4 inclusive.

The gear members 41, 42, 43 and 51 are each respectively held against accidental rotation or other movement by tensionally controlled arms 53, 54, 55 and 56, each of which is pivoted to the carriage member 12 as indicated at 57, and is provided with a spiral spring 58 which gives tension thereto, and the free ends of said arms are rovided with tooth-like projections 59 w ich cooperate with the grooves or recesses in the gear members41, 42, 43 and 51, as clearly illustrated in Figs. 1 and 2 of the drawing.

Rotatably mounted on a shaft 60'passe'd vertically through the base 10 and the guide block 14 is a gear member 61 which is also provided with a tensionally controlled arm 62 pivoted to said block at 63. and provided with a spiral spring 64, and the free end of said arm is also provided with a tooth like projection 65 which is adapted to operate in the grooves or recesses in the gear member 61.

The top faces of the ars 41, 42, 43 and 51 are provided with dials bearing the numerals O to 9 inclusive, as illustrated in Figs. 1 and 2 of the drawing, and these numerals are normally set as illustrated in Fig. 1 or with all of the naughts at the right longitudinal center through said gears, and it will be seen that each numeral is in radial alinement with the teeth of said gears as well as the gears 47 and 49. The top face of the gear 61 is Provided with a.

dial? having two series of annularly ar-l ranged numerals from 0 to 9 inclusive, the numerals in one of said series being enumerated in a direction opposite to that of-the other as clearly illustrated, and these numerals are in radial alinement with the grooves or recesses in the gear 61, and when the machine is in its normal position the naughts on said dial are also at the ht longitudinal center of said gear as ii urtrated in Fig. 1 of the drawing.

The accompanying drawings are more or less diagrammatic and have been so made to clearly illustrate the details of the device and the operation thereof, but it wilt be m deistood that the mechanism as shown ma be mounted or supported in a suitable easing through the top of which the crank 27 will ass, as well as the means for manipulating the shutter plates 37, and transparent panels may be provided directly above the points designated by the zero numerals of the dials shown in Fig. 1, but as these (lbtails of construction form no part of My invention and as they do not add to the mechanical construction they are not shown, described nor claimed.

The use of my im roved machine wilt be readily understood y all those skilled in the art to which it appertains on a consideration of the foregoing description and the accompanying drawing when taken in nection with the following statement. hereinbefore stated, the normal position at the parts of the machine is that illustrated in Fig. 1, and in order that the use of the machine may be understood, I have shown in Fig. 2, the result of multiplying 25 by 10 olution, with the carriage member 12 in the position shown in Fig. 1. the gears 41 and 42 would be rotated by the pins 36 on both of the disks 22 and 23 and, the numerals 2 and 5. would appear respectively on the dials of the gears 42 and 41, but by moving or sliding the carriage member 12 into the position shown in Fig. 2, or by bringing the gears 42 and 43 in position to coiiperate with the pins 36 on the disks 22 and 23, one revwill give a result of 250, as will be seen, or

inshort by slidingthe carriage member 12 to the right and rotating the crank 27 one revolution, the 2 and 5 on the units and tenths disk 23 and 22 respectively ismultiplied by ten instead of by one, as above illustrated in connection with Fig. ,1 of the drawing.

In the above operation of the crank an outwardly directed finger 66 onthe disk 23 cooperates with the gear 61 to bring the numeral 1 of the outer series of numerals on the dial of said gear into alinement with the tooth-like projection of the arm-62, and if the crank 27 were rotated another revolution the numeral two would appear in the position of the numeral one on the dial of the gear 61, as shown in Fig. 2, and the numerals 5-00 would appear respectively on the gears 43, 42 and 41, or in other words twenty times twenty-five would be five hundred. In this last operation it will be noted that the arm 48 cofiperated with the gear 49 to advance said gear one step.

' It will'also be understood that when the carriage member 12 is in the position shown in Fig. '1, the crank. 27 might be rotated ten times and the same result would be attained, as shown in Fig. 2, the sliding of the carriage member 12 however, is a much quicker and more'etficient way of obtaining the result of any multiplication of more than one figure.

After any particular multiplication problem has been solved, the gears 41, 42. 43 and 51 are returned to their normal position by hand by rotating them from right to left. It is believed that the foregoing description will illustrate sufiiciently the method of performing mathematical multiplications, and in order to illustrate the use of the machine in dividing one number by another, I submit the following.

Suppose it be desired to divide twentyfive into two hundred and fifty, the machine will be set as shown in Fig. 2 of the drawing, by moving the gears 43', 42 and 41 into the position shown in said figure, or to bring the numerals 2-50 respectively on the dials of said gears, and the gear 61 will be moved into position tobring the numerals'0 on the dials thereof in line with the tooth-like projections 65 of the arm 62, after which the shutter plates'37 on the disks 22 and 23 are moved-into the osition shown in Fig. 2, or to free two of the tenths pins and five of the units pins, resulting in twenty-five, and by rotating the crank 27 in the direction of the arrow 20 one revolution, in which operation the gears 43 and 42 will be rotated by the pins 36 on the disks 22 and 23 and will bring the numerals 0 on the dials of said gears back into the position shown in Fig. 1, while the gear 61 will be rotated one notch by the outwardly directed finger 66 on the face of the disk 23 to bring the numeral 1 on the inner series of numerals on the dial of said gear into alinement with the tooth or projection 65 on the arm 62, which will give a result of 10, or in other words twenty-five will go into two hundred and fifty ten times, for illustration, this re sult might also be accomplished with the numerals on the gears 43, 42 and 41 as shown in Fig. 2, but with the carriage member 12' in the position shown in Fig. 1, and by rotating the crank 27 ten times in the direction of the arrow :0 The rule is that the crank 27 is turned in the direction of the arrow m until the numerals of the gears 4342 or 4241 are less than the divisor,

or twenty-five in the example above set out and if there is a remainder in any particular d1v1s1on made on the machine, such remainder will appear on the dials of the gears, it being understood that the remainder is bound to be less than the divisor. This last feature of the machine might clearly be illustrated if it be presumed that tie gear 41, as shown in Fig. 2, be moved into position to bring the numeral 5 on the dial in the position of the numeral 0 shown, and then divide twenty-five into two hundred and fifty-five instead of two hundred and fifty, one revolution of the crank 27 in the direction of the arrow :0 will give a result of ten and a remainder of five, which remainder will be found upon the dial of the gear 41.

It is believed that the foregoing examples will, when taken in connection with the accompanying, drawings, enable all those skilled in machines of this class to understand the method of its use and the operation thereof, and while I have shown four gears 41, 42, 43 and 51 with dials having numerals from 0 to 9 thereon, which permits Of the division of two numerals up to ninety-nine into four numerals up to nine thousand nine hundred and ninety-nine and to multiply two or more numerals with two or more numerals that will give a result not over nine thousand nine hundred and ninety-nine, it will be readily understood that by adding other gears similar to the gears above set out and by introducing other disks similar to the disks 22 and 23, the machine may be constructed to multiply numerals of indefinite length and to correspondingly divide numerals of indefinite length. The only essential feature being to provide a single operative crank which will be so geared in connection with the disks 22 and 23, or other disks, as to rotate all of such disks in the manner of rotating the disks 22 and 23, but as the principle of my invention and method of its operation is clearly illustrated in the accompanying understood that various changes in and modifications of the details of construction herein shown and described may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

It will be noted that the disks 22 and 23, or the pins 36 thereof, are so located as to operate successively in connection with the gears 41, 42 and 43 as said disks are rotated, in other words, after the pins 36 of one disk have completed their cooperation with one of said gears, the pins upon the other disk will immediately start to operate another of said gears this, as will be seen, is an essential feature of the apparatus in order that it will operate successfully.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a machine of the class described, a base, a carriage member mounted to slide longitudinally of said base, a plurality of gears spaced longitudinally of and upon the face of said carriage and movable therewith, the faces of said gears being provided with dials, a plurality of disks rotatably mounted on the base in juxtaposition to a number of said gears and each of which is provided with a plurality of projecting members adapted to cooperate with said gears, and means on said base and operating in connection with all of said disks for rotating said disks and said gears.

2. In a machine of the class described, a base, a carriage member mounted to slide longitudinally of said base, a plurality of gears spaced longitudinally of and upon the face of said carriage and movable therewith, the faces of said gears being provided with dials, a plurality of disks rotatably mounted on the base in juxtaposition to a number of said gears and each of which is provided with a plurality of projecting members adapted to cooperate with said gears, means on said base and operating in connection with all of said disks for rotating said disks and saidgears, and means adjustably base, a carriage member mounted to slide longitudinally of said base, a plurality-0f gears spaced longitudinally of and'upon the face of said carriage and movable therewith, the faces of said gears being provided with dials, a plurality of disks rotatably mounted on the base in juxtaposition to a number of said gears and each of which is provided with ,a plurality of projecting members adapted to cooperate with said gears, means on said. base and operating in connection with all of said disks for rotating said disks and said gears, means adjustably mounted on said disks whereby a plurality of the projecting members of each of said disks may be held out of operative connection with said gears when said disks are rotated, and the projecting members of each of said disks being adapted to rotate a number of said gears.

4. In a machine of the class described, a. base, a carriage member mounted to slide longitudinally of said base, a plurality of gears spaced longitudinallv of and upon theface of said carriage an movable therewith, the faces of said gears being provided with dials, a pluralit of disks rotatably mounted on the base in juxtaposition to a number of said gears and each of which isprovided with a plurality of projectin members adapted to cooperate with sai gears, means on said base and oierating in connection with all of said disks or rotating said disks and said gears, means adjustably mounted on said disks whereby a plurality of the projecting members of each of said disks may be held out of operative connection with said gears. when said disks are rotated, the projecting members of each of said disks being adapted to rotate a number of said gears, one of saiddisks being provided with a projecting member and a gear rotatably mounted on said base in juxtaposition to said disk and adapted tobe rotated by the projecting member thereon, said last named gear being provided with a dial.

5. In a machine of the class described, a. base, a carriage member mounted to slide longitudinally of said base, means for locking said carriage in connection with said base in different positions, a plurality of gears rotatably mounted on and spaced longitudinally of the face of said carriage and movable therewith, tensionall y operated devices mounted on said carriage and operating in connection with said gears for bolding said gears normally in a stationary position,v a plurality of disks rotatably mounted-on the base in juxtaposition to a number of said gears, a plurality of tensionally operated pins in each of said disks, said pins being normally extended beyond one face of said disks, means adjustably mounted on said disksfo'r holding said pins in a depressed position, and means mounted on the base and in operative connection with said disks for rotating the same to bring'the pins extended therefrom into operative relation with a number of said gears.

6. In a machine of the class described, a base, a carriage member mounted to slide longitudinally of said base, means for locking said carriage in connection with said base in different positions, a plurality of gears rotatably mounted on and spaced longitudinally of the face of said carriage and movable therewith, tensionally operated devices mounted on said carriage and operating in connection with said gears for holding said gears normally in a stationary position, a plurality of disks rotatably mounted on the base in juxtaposition to a number of said gears, a plurality of tensionally operated pins on each of said disks, said pins being normally extended beyond one face of said disks, means adjustably mounted on said disks for holding said pins in a depressed position, means mounted on the base and in operative connection with said disks for rotating the same to bring the pins extended therefrom into operative position with a number of said gears, and a gear mounted on the base in juxtaposition to one of said disks and adapted to be operated by said disk at each revolution thereof.

7. In a machine of the class described, a base, a carriage mounted to slide longitudinally of said base, a plurality of dial elements mounted on said carriage, a plurality of gears on said carriage and in operative connection with said dial elements, a plurality of disks mounted in juxtaposition to said elements, a-plurality of projecting members in said disks, means movably mounted on said disks for projecting a predetermined number of said members on each of said disks, means for rotating said disks to bring the members projected therefrom into cooperative relation with a member of said dial elements as said dial disks are rotated, and means for shifting all of said elements to move the first named member thereof out of engagement with said projecting members and to move other dial elements into engagement therewith.

8. In a machine of the class described, a base, a carriage mounted to slide longitudinally of said base, a plurality of dial elements mounted on said carriage, a plurality of gears on said carriage and in operative connection with said dial elements, a plurality of disks mounted in juxtaposition to said elements, a plurality of projecting members in said disks, means movably mounted on said disks for projecting a predetermined number of said members on each of said disks, means for rotating said disks to bring a the members projected therefrom into cooperative relation with a'member of said dial elements as said dial disks are rotated, means for shifting all of said elements to move the first named member thereof out of engagement with said projecting members and to move other dial elements into engagement therewith, and tensionally operated devices mounted on said carriage and operating in connection with aid elements to hold the same against accidental rotation.

9. In a machine of the class described, a base, a carriage mounted to slide longitudinally of said base, a plurality of dial elements mounted on said carriage, a plurality of gears on said carriage and in operative connection with said dial elements, a plurality of disks mounted in juxtaposition to said elements, a plurality of projecting members in said disks, means movably mounted on said disks for projecting a predetermined number of said members on each of said disks, means for rotating said disks to bring the members projected therefrom into cooperative relation with a number of said dial elements as said dial disks are rotated, means for shifting all of said elements to move the first, named member thereof out of engagement with said projecting members and to move other dial elements into engagement therewith, tensionally operated devices mounted on said carriage and operating in connection with said elements to hold the same against accidental rotation, and cooperating means on said dial elements and said gears for rotating said elements and said gears when said disks are rotated.

10. In a machine of the class described, a base, a carriage mounted to slide longitudinally of said base, a plurality of dial elements mounted on said carriage, a plurality of gears on said carriage and in operative connection with said dial elements, a plurality of disks mounted in juxtaposition to said elements, a plurality of projecting members in said disks, means movably mounted on said disks for projecting a predetermined number of said members on each of said disks, means for rotating said disks to bring the members projected therefrom into cooperative relation with a number of said dial elements as said dial disks are rotated, means for shifting all of said elements to move the first named member thereof'out of engagement with said projecting members and to move other dial elements into engage ment therewith, tensionally operated devibes mounted on said carriage and operating in connection with said elements to hold the same against accidental rotation, cooperating means on said dial elements and said gears for rotating said elements and said presence of the subscribing witnesses, this gears When said disks are rotated, and 27th day of August, 1918.

means operating in connection with one of v said disks for recording each revolution of GARDNER PLUM 6 said disk. Witnesses:

In testimony that I claim the foregoing C. E. MULREANY,

as my invention I have signed my name, in H. E. THOMPSON. 

